Ulcerated duodenal gastrointestinal stromal tumor – Demonstration of an interesting radiological sign (the Torricelli-Bernoulli sign)

Abstract

The Torricelli-Bernoulli sign is a useful computed tomographic sign seen in ulcerated/necrotic gastrointestinal stromal tumor (GIST) or leiomyosarcoma characterized by the collection of air in the nondependent aspect of larger gastrointestinal cavitating tumors. This sign is based on the physical principle of the law of Torricelli's and Bernoulli's principle. Herein, we describe this interesting imaging sign in an adult male with malignant duodenal GIST with extensive hepatic, peritoneal, omental, and lymph nodes (though rare in GIST) metastasis. The patient succumbed few days after admission.